Fabrication and characterization of thin film electrolytes deposited by RF magnetron sputtering for low temperature solid oxide fuel cells

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DOIResolve DOI: http://doi.org/10.1016/j.jpowsour.2005.12.050
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TypeArticle
Journal titleJournal of Power Sources
Volume160
Issue1
Pages202206; # of pages: 5
SubjectBilayered; Low temperature solid oxide fuel cell; RF magnetron sputtering; Thin film electrolyte
AbstractThin film solid electrolytes of La0.9Sr0.1Ga0.8Mg0.2O3−δ (LSGM), Sm0.2Ce0.8O1.9 (SDC), and Sc0.11Zr0.89O2−δ (ScSZ) were deposited by RF magnetron sputtering onto single crystal sapphire substrates as well as onto porous NiO–SDC anodes at deposition temperatures of RT ≤ T ≤ 500 °C. The electrical conductivities, phase analyses as deposited and after annealing and microstructures of the deposited thin film electrolytes were examined. In addition, the electrochemical performance of single cells composed of Sm0.5Sr0.5O3−δ (SSC) + SDC//SDC/ScSZ//NiO + SDC was demonstrated. Impervious and highly dense bilayer thin films of SDC and ScSZ have been successfully prepared on porous NiO–SDC anodes. Maximum power densities of 360 and 240 mW cm−2 from single cells of Sm0.5Sr0.5O3−δ (SSC) + SDC//SDC/ScSZ//NiO + SDC were obtained at 600 and 550 °C, respectively, under humid 20% H2 in Ar (3% H2O) and air. RF magnetron sputtering can be applied for depositing high performance thin film electrolytes in low temperature SOFCs. Keywords: RF magnetron sputtering; Thin film electrolyte; Bilayered; Low temperature solid oxide fuel cell
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AffiliationNational Research Council Canada; NRC Institute for Chemical Process and Environmental Technology
Peer reviewedNo
NPARC number12333707
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Record identifiera9f7f347-1e04-432f-8cb9-bb6fe7d51bbe
Record created2009-09-10
Record modified2016-05-09
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